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217 lines
7.7 KiB
217 lines
7.7 KiB
# -*- coding: utf-8 -*-
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# Copyright 2013 XCG Consulting (http://odoo.consulting)
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# License AGPL-3.0 or later (http://www.gnu.org/licenses/agpl)
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from cStringIO import StringIO
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import json
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import pkg_resources
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import os
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import sys
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from base64 import b64decode
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import requests
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from tempfile import NamedTemporaryFile
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from py3o.template.helpers import Py3oConvertor
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from py3o.template import Template
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from py3o.formats import Formats
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from openerp import _
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from openerp import exceptions
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from openerp.report.report_sxw import report_sxw
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from openerp import registry
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_extender_functions = {}
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class TemplateNotFound(Exception):
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pass
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def py3o_report_extender(report_xml_id=None):
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"""
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A decorator to define function to extend the context sent to a template.
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This will be called at the creation of the report.
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The following arguments will be passed to it:
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- ir_report: report instance
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- localcontext: The context that will be passed to the report engine
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If no report_xml_id is given the extender is registered for all py3o
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reports
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Idea copied from CampToCamp report_webkit module.
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:param report_xml_id: xml id of the report
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:return: a decorated class
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"""
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global _extender_functions
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def fct1(fct):
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_extender_functions.setdefault(report_xml_id, []).append(fct)
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return fct
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return fct1
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@py3o_report_extender()
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def defautl_extend(report_xml, localcontext):
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# add the base64decode function to be able do decode binary fields into
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# the template
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localcontext['b64decode'] = b64decode
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class Py3oParser(report_sxw):
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"""Custom class that use Py3o to render libroffice reports.
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Code partially taken from CampToCamp's webkit_report."""
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def get_template(self, report_obj):
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"""private helper to fetch the template data either from the database
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or from the default template file provided by the implementer.
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ATM this method takes a report definition recordset
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to try and fetch the report template from database. If not found it
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will fallback to the template file referenced in the report definition.
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@param report_obj: a recordset representing the report defintion
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@type report_obj: openerp.model.recordset instance
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@returns: string or buffer containing the template data
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@raises: TemplateNotFound which is a subclass of
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openerp.exceptions.DeferredException
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"""
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tmpl_data = None
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if report_obj.py3o_template_id and report_obj.py3o_template_id.id:
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# if a user gave a report template
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tmpl_data = b64decode(
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report_obj.py3o_template_id.py3o_template_data
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)
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elif report_obj.py3o_template_fallback:
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tmpl_name = report_obj.py3o_template_fallback
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flbk_filename = None
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if report_obj.module:
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# if the default is defined
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flbk_filename = pkg_resources.resource_filename(
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"openerp.addons.%s" % report_obj.module,
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tmpl_name,
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)
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elif os.path.isabs(tmpl_name):
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# It is an absolute path
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flbk_filename = os.path.normcase(os.path.normpath(tmpl_name))
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if flbk_filename and os.path.exists(flbk_filename):
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# and it exists on the fileystem
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with open(flbk_filename, 'r') as tmpl:
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tmpl_data = tmpl.read()
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if tmpl_data is None:
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# if for any reason the template is not found
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raise TemplateNotFound(
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_(u'No template found. Aborting.'),
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sys.exc_info(),
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)
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return tmpl_data
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def _extend_parser_context(self, parser_instance, report_xml):
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# add default extenders
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for fct in _extender_functions.get(None, []):
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fct(report_xml, parser_instance.localcontext)
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# add extenders for registered on the template
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xml_id = report_xml.get_external_id().get(report_xml.id)
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if xml_id in _extender_functions:
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for fct in _extender_functions[xml_id]:
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fct(report_xml, parser_instance.localcontext)
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def create_single_pdf(self, cr, uid, ids, data, report_xml, context=None):
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""" Overide this function to generate our py3o report
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"""
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if report_xml.report_type != 'py3o':
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return super(Py3oParser, self).create_single_pdf(
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cr, uid, ids, data, report_xml, context=context
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)
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parser_instance = self.parser(cr, uid, self.name2, context=context)
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parser_instance.set_context(
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self.getObjects(cr, uid, ids, context),
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data, ids, report_xml.report_type
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)
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self._extend_parser_context(parser_instance, report_xml)
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tmpl_data = self.get_template(report_xml)
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in_stream = StringIO(tmpl_data)
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out_stream = StringIO()
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template = Template(in_stream, out_stream)
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localcontext = parser_instance.localcontext
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if report_xml.py3o_is_local_fusion:
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template.render(localcontext)
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in_stream = out_stream
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datadict = {}
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else:
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expressions = template.get_all_user_python_expression()
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py_expression = template.convert_py3o_to_python_ast(expressions)
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convertor = Py3oConvertor()
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data_struct = convertor(py_expression)
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datadict = data_struct.render(localcontext)
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filetype = report_xml.py3o_filetype
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is_native = Formats().get_format(filetype).native
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if is_native:
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res = out_stream.getvalue()
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else: # Call py3o.server to render the template in the desired format
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in_stream.seek(0)
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files = {
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'tmpl_file': in_stream,
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}
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fields = {
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"targetformat": filetype,
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"datadict": json.dumps(datadict),
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"image_mapping": "{}",
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}
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if report_xml.py3o_is_local_fusion:
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fields['skipfusion'] = '1'
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r = requests.post(
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report_xml.py3o_server_id.url, data=fields, files=files)
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if r.status_code != 200:
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# server says we have an issue... let's tell that to enduser
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raise exceptions.Warning(
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_('Fusion server error %s') % r.text,
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)
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# Here is a little joke about Odoo
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# we do nice chunked reading from the network...
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chunk_size = 1024
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with NamedTemporaryFile(
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suffix=filetype.human_ext,
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prefix='py3o-template-'
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) as fd:
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for chunk in r.iter_content(chunk_size):
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fd.write(chunk)
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fd.seek(0)
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# ... but odoo wants the whole data in memory anyways :)
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res = fd.read()
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return res, "." + filetype
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def create(self, cr, uid, ids, data, context=None):
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""" Override this function to handle our py3o report
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"""
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pool = registry(cr.dbname)
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ir_action_report_obj = pool['ir.actions.report.xml']
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report_xml_ids = ir_action_report_obj.search(
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cr, uid, [('report_name', '=', self.name[7:])], context=context
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)
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if not report_xml_ids:
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return super(Py3oParser, self).create(
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cr, uid, ids, data, context=context
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)
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report_xml = ir_action_report_obj.browse(
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cr, uid, report_xml_ids[0], context=context
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)
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result = self.create_source_pdf(
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cr, uid, ids, data, report_xml, context
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)
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if not result:
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return False, False
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return result
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